US917057A - Composition of matter for basing-cement. - Google Patents

Description

' NEW-1mm. s SL NOR I CQRPQBQATION 1 OF mamtljaim w Nnwani eefiosmba wmes non-nnsiiis-cnunnn Specification of Letters Patent.

Application filed September 22, 1906. semi No; 335,695.

To all whom it may concern:

Be it known that I, DANIEL HAND, citizen of the United States, residing at Newark, county of Essex, State of New Jersey, have invented certain new and useful Improvements in Compositions of Matter for Basing-Cement, of which the following is a specification. Y

My invention relates to the manufacture of cement and particularly the kind used in the manufacture of incandescent lampsfor attaching the bases of the lamps to the bulbs. The cement used for this purpose is usually called a basing compound. l

The object of my invention is the production of a cement of high melting point havin a high degree of adhesiveness which will flow readily when heated and which soon sets and holds together in a permanent manner the parts to which it is applied;

A further object of my invention is the production of a cement for use as u.- basing compound which is composed of materials which is higher than that of thegum alone.

I l ve found that it is best to use oxids for this purpose which have a basic nature and not an acidic character, for instance such metallic oxids as .calcium oxid, magnesium oxid, aluminum oxid, zincoxid, lead oxid,

etc. The melting point which any of-these compounds of gum and metallic oxid will have, depends upon the particular substances used and upon the proportions in which they are combined.

In order to cheapen the compound without interfering with its adhesiveness and flowing property, I add to the compound of m and metallic oxid as a diluent, some inert material. For this purpose I'find such substances as barytes, plaster of paris, whiting, leadsulfate, etc, are well adapted.

The process of combining the above in-' gredients to form a satisfactory basing compound is very simple and may be as follows:

explained above. prefer either barytes or plaster of paris.

. heating melted to a smoothly fiuid state. The proper amount of metallic oxid isthen slowly added become a uniformly fluid mass, theheatbe ing continued meanwhile. -To this metallic oxid and gum compound, while in this fluid condition, is slowly added, duringconstant stirring, varying proportionsgofinert ma-L 'te'rial, the quantity of this depending upon the character of the inert substance used and the purpose for which the cement is intended. The addition of inert material is, of course, not carried so far as tointerfere with the flowing of the completely mixed mass when this is to be used in basing.

' In order to indicate the manner in WhlCh various gums and metallic oxids 'may. be

combined and mixed with an inert material to form a cement having characteristlcs which adapt it for any particular purpose,

I will now describe a compound which I. have found to be admirably suited for certain purposes, especially the basing of incandescent lamps. To give my compound thequality of adhesiveness I use what is generally called rosin, but tothis I add a small amount of a certain grade of Manila gum known as lacquer. stock. The purpose of the Manila gum is to raise the melting point of the compound, and this end is also attained -by the addition of a metallic oxid as, for example, zinc oxid 'inthe manner For my inert material I Therelative amounts of these ingredients which I use. are given below, the percentages being based on the total weight of materials used: rosin 18%, Manila lacquer stock 2%, zinc oxid 5%, barytes 7 5%. This compound has a. melting point of about 125 C. and will readily flow in a stream from the t into the lamp base. When plaster- .oF-parisis used instead of barytes, the proportionsof the ingredients which go to make up the compound should be as follows: Trosin 36%, Manila lacquer stock 4%, zincoxid 10%, plaster of paris 50%.

Although I have described in particular two compounds/in which are embodied the principles of my invention,-I wish it distinctly understood that I do not mean to be limited to these and that I consider: all compounds in which substances of the classes pennant nLEoTnIo'ooMrA Y, A

The gum or mixture of" gums is first PatentedApi'flB, 190.9-

and stirred into the gum until the whole has a I I enumerated above are combined in a manner similar to that which I have described are Within the scope of my invention. Compounds of man kinds having properties which fit them or use in various arts may be formed in the manner I have indicated. The melting point of these Various compounds depends upon the fact that when an gum is heated with. a metallic oxid there results a compound which has a Very much hi her melting point than the gum origina l'y" had. 'What the melting compound will be, depends o the particular gum used and the amount and kind of metallic oxid which is employed.

What I claim as new", and desire to secure by Letters Patent of the United States, is, 1. The hereindescribed composition of vmatter c nsisting of rosin; a metallic oxid mixed therewith to form a chemical compoint' of the I course, upon pound, a gum having a higher melting point than said compound, and an inert diluent.-

2. The herem-described composition of matter consisting of rosin, zinc oxid mixed therewith to form zinc resinate, a gu having a higher melting point than said resinate, and a powdered inert diluent.

3. A composition of matter consisting of rosin, a basic oxid, Manila gum, and an inert material.

4. A composition of matter consisting of the following substances substantially in the proportion by'weight indicated: rosin 18%, Manila gum 2%, zinc oxid 5%, and barytes 75%.

In witness whereof, I have hereunto set my hand this 20th day of September, 1906.

- y DANIEL HAND.

Witnesses:

S. N. WHITEHEAD, J. HARRY ELKINS,